Open AccessMobile forms of metals in soils in the Nadym-Pur interfluve (Western Siberia)
Author(s) -
Е. А. Романенко,
Д. В. Московченко,
A.A. Kudryavtsev,
Gulnara Shigabaeva
Publication year - 2020
Publication title -
vestnik nižnevartovskogo gosudarstvennogo universiteta
Language(s) - English
Resource type - Journals
eISSN - 2311-4444
pISSN - 2311-1402
DOI - 10.36906/2311-4444/20-2/18
Subject(s) - podzol , soil water , environmental chemistry , eluvium , chemistry , metal , organic matter , soil test , ammonium acetate , soil horizon , horizon , mineralogy , environmental science , soil science , physics , high performance liquid chromatography , organic chemistry , chromatography , astronomy
The total concentrations of metals (Fe, Mn, Cu, Ni, Cr, Sr) and their mobile forms extracted by an ammonium acetate buffer (pH = 4,8) were studied in soils samples collected from Nadym-Pur interfluve (West Siberia), near the northern limit of the taiga zone. The heavy metal content was determined in 55 background soil samples and in 25 pyrogenic ones. Gross content was determined on a spectrometer "SPECTROSCAN MAX-GV" using x-ray fluorescence analysis. Mobile forms of metals were determined on a ContrAA 700 atomic absorption spectrometer by flame and electrothermal methods. The statistics are calculated using the Excel software package. The study confirmed the weak accumulation of metals in the soils of the northern regions of Western Siberia. The total content below the soil world average for Fe is 5 times, Mn - 3 times, Sr - 2 times, Cr - 1,4 times. The content of mobile forms varies widely depending on the amount of organic matter. The percentage of mobile forms of metals from the total content was: Cr - 0.84%, Fe - 1,2%, Sr - 3,8%, Mn - 8,7%, Ni - 15%. In the profile of podzols, the distribution of mobile forms of metals has an eluvial-illuvial character. Mn and Sr accumulate intensively in the surface organogenic horizons, and the Fe content increases in the BF horizon. Minimum values are marked in horizon E. In pyrogenic soils, there is an increase in the content of mobile forms of metals due to the intake of ash. Metal content usually not exceeded the maximal permissible concentrations for soils.